Flexible shaft coupling



` to each other.

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Application flied July la, i927. Serial No. 9,085,904..

My invention aims to provide a shat't coupling of simple and economical construction which will permit a certain amount of play or angularity between the driving and driven members.

The accompanying drawings illustrate an embodiment of the invention.

Fig. 1 is a longitudinal section partly in elevation;

Fig. 2 is asection on the line 2-2.

The two shafts 1 and 2 are aligned with each other. rlhe first has a recess 3 in its end of hexagonal or similar non-circular shape, and beyond this a recess et for carrying a supply of grease to ease any movement ot' the parts on each other.,

The shaft 2 has on its end a projection 5 shaped to tit within the recess 3 with a slight play so. that the rotation oit either shaft will drive the other while permitting a certain rotative play between them and also a certain angular displacement ot the longitudinal axesot the two shafts with respect to each other.

Between the end of the shalit l and a shoulder on the shaft 2 surrounding the projection 5, there is a packing ring 6 of telt or similar yielding material which holds the shafts properly spaced. The parts are held together by a sleeve 7 made of considerable thickness and of high grade rubber which will permit easy Flexibility; and which will enter freely in grooves 8 around the end portions of the shafts and prevent longitudinal displacement of the latter with respect For greater security the rubber may be compressed and clamped on the shafts by means of clamping rings 9 near the ends of the sleeve, which are fastened by screws 10 passing through flanges in the ends ot the clamps.

rthe coupling permits a certain slight longitudinal play and a slight rocking of the shatts with respect to cach other. rlhe resiliency or the rubber, however, holds the parts against permanent displacement.

rotative and angular play and adapted when such rotative play is taken up to make a Ypositive driving connection.

- 2. A flexible coupling comprising a pair ot shafts and a rubber sleeve embracing the ends of the shafts, holding them against lateral and longitudinal displacement and ltransmitting the torque of one tothe other,

the end of one shaft also engaging the other with a slight rotative and angular play and adapted when such rotative play is taken up to make a positive driving connection.

3. A flexible coupling comprising a pair ot shafts and a rubber member engaging the ends ot the shafts and transmitting the torque of one to the other, the end of one shaft also engaging the other with a slight rotative and angular play and adapted when such rotative play istaken up to make a positive driving connection and means for carrying a lubricant between the engaging ends of the shaft-s.

fl. A flexible coupling comprising a pair of shafts and a rubber member engaging the ends o the shafts and transmitting the torque 'of one to the other, the end of one shaft also engaging the other with a slight rotative and angular play and adapted when such play is taken up to make a positive driving connection and a ring of yielding material between the ends of the shafts adapted to hold them properly spaced.

in witness whereof, l have hereunto signed my name, 

